Here is a couple of good links for propane knowledge and safety.
http://www.flameengineering.com/Propane_Info.html
http://www.gasco-propane.com/Files/safety.html
http://www.propane101.com/
http://www.nfpa.org/categoryList.asp?ca ... kie_test=1
http://www.funroads.com/rv-travel/safety/propane/
Ok.... So there is a lot of links... And you might think most pertain to BIG TANKS and transport rigs and "the other guys"...
Keep in mind propane does not care, if you are a little guy with #1 cylinder or a 500 gallon tank in back yard or a 5 gallon tank on trailer tongue...
Propane leaks are propane leaks, explosions are explosions....
Remember when propane leaks it flows downward because its heavier than air...
Remember that when propane and air reach proper mixture and ignited it will explode and expand 277 times its initial volume...
And the odor in propane is Ethyl Mercaptan because un-odorized propane does not have any smell... It's added to propane to help humans detect leaks by using their noses...
Be safe my friends....
Dale